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Gemini API 429 Error — Incident Summary
Our chatbot was throwing 429 RESOURCE_EXHAUSTED errors from Google's Gemini API. After investigation, this is confirmed to be Google's backend issue, not our code — our quota dashboard showed only 175 requests used out of an Unlimited Tier 3 allowance, with peak RPM at 0.07% of the limit. This exact bug is documented on Google's own developer forum with a Google engineer acknowledging it (link below).
Fix applied: Added automatic retry logic to the chatbot. It now silently retries up to 6 times before showing any error to the user, so most users will never notice.
Will it happen again? Likely yes — Google's instability has been ongoing since December 2025. But with retries in place, the chatbot handles it automatically.
is there someone who else getting same error and know how to fix it?
